/*
 *  base64.js
 *
 *  Licensed under the BSD 3-Clause License.
 *    http://opensource.org/licenses/BSD-3-Clause
 *
 *  References:
 *    http://en.wikipedia.org/wiki/Base64
 */
;(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined'
    ? (module.exports = factory(global))
    : typeof define === 'function' && define.amd
    ? define(factory)
    : factory(global)
})(
  typeof self !== 'undefined'
    ? self
    : typeof window !== 'undefined'
    ? window
    : typeof global !== 'undefined'
    ? global
    : this,
  function (global) {
    'use strict'
    // existing version for noConflict()
    global = global || {}
    var _Base64 = global.Base64
    var version = '2.5.2'
    // if node.js and NOT React Native, we use Buffer
    var buffer
    if (typeof module !== 'undefined' && module.exports) {
      try {
        buffer = eval("require('buffer').Buffer")
      } catch (err) {
        buffer = undefined
      }
    }
    // constants
    var b64chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
    var b64tab = (function (bin) {
      var t = {}
      for (var i = 0, l = bin.length; i < l; i++) t[bin.charAt(i)] = i
      return t
    })(b64chars)
    var fromCharCode = String.fromCharCode
    // encoder stuff
    var cb_utob = function (c) {
      if (c.length < 2) {
        var cc = c.charCodeAt(0)
        return cc < 0x80
          ? c
          : cc < 0x800
          ? fromCharCode(0xc0 | (cc >>> 6)) + fromCharCode(0x80 | (cc & 0x3f))
          : fromCharCode(0xe0 | ((cc >>> 12) & 0x0f)) +
            fromCharCode(0x80 | ((cc >>> 6) & 0x3f)) +
            fromCharCode(0x80 | (cc & 0x3f))
      } else {
        var cc = 0x10000 + (c.charCodeAt(0) - 0xd800) * 0x400 + (c.charCodeAt(1) - 0xdc00)
        return (
          fromCharCode(0xf0 | ((cc >>> 18) & 0x07)) +
          fromCharCode(0x80 | ((cc >>> 12) & 0x3f)) +
          fromCharCode(0x80 | ((cc >>> 6) & 0x3f)) +
          fromCharCode(0x80 | (cc & 0x3f))
        )
      }
    }
    var re_utob = /[\uD800-\uDBFF][\uDC00-\uDFFFF]|[^\x00-\x7F]/g
    var utob = function (u) {
      return u.replace(re_utob, cb_utob)
    }
    var cb_encode = function (ccc) {
      var padlen = [0, 2, 1][ccc.length % 3],
        ord =
          (ccc.charCodeAt(0) << 16) |
          ((ccc.length > 1 ? ccc.charCodeAt(1) : 0) << 8) |
          (ccc.length > 2 ? ccc.charCodeAt(2) : 0),
        chars = [
          b64chars.charAt(ord >>> 18),
          b64chars.charAt((ord >>> 12) & 63),
          padlen >= 2 ? '=' : b64chars.charAt((ord >>> 6) & 63),
          padlen >= 1 ? '=' : b64chars.charAt(ord & 63),
        ]
      return chars.join('')
    }
    var btoa = global.btoa
      ? function (b) {
          return global.btoa(b)
        }
      : function (b) {
          return b.replace(/[\s\S]{1,3}/g, cb_encode)
        }
    var _encode = function (u) {
      var isUint8Array = Object.prototype.toString.call(u) === '[object Uint8Array]'
      return isUint8Array ? u.toString('base64') : btoa(utob(String(u)))
    }
    var encode = function (u, urisafe) {
      return !urisafe
        ? _encode(u)
        : _encode(String(u))
            .replace(/[+\/]/g, function (m0) {
              return m0 == '+' ? '-' : '_'
            })
            .replace(/=/g, '')
    }
    var encodeURI = function (u) {
      return encode(u, true)
    }
    // decoder stuff
    var re_btou = /[\xC0-\xDF][\x80-\xBF]|[\xE0-\xEF][\x80-\xBF]{2}|[\xF0-\xF7][\x80-\xBF]{3}/g
    var cb_btou = function (cccc) {
      switch (cccc.length) {
        case 4:
          var cp =
              ((0x07 & cccc.charCodeAt(0)) << 18) |
              ((0x3f & cccc.charCodeAt(1)) << 12) |
              ((0x3f & cccc.charCodeAt(2)) << 6) |
              (0x3f & cccc.charCodeAt(3)),
            offset = cp - 0x10000
          return fromCharCode((offset >>> 10) + 0xd800) + fromCharCode((offset & 0x3ff) + 0xdc00)
        case 3:
          return fromCharCode(
            ((0x0f & cccc.charCodeAt(0)) << 12) |
              ((0x3f & cccc.charCodeAt(1)) << 6) |
              (0x3f & cccc.charCodeAt(2))
          )
        default:
          return fromCharCode(((0x1f & cccc.charCodeAt(0)) << 6) | (0x3f & cccc.charCodeAt(1)))
      }
    }
    var btou = function (b) {
      return b.replace(re_btou, cb_btou)
    }
    var cb_decode = function (cccc) {
      var len = cccc.length,
        padlen = len % 4,
        n =
          (len > 0 ? b64tab[cccc.charAt(0)] << 18 : 0) |
          (len > 1 ? b64tab[cccc.charAt(1)] << 12 : 0) |
          (len > 2 ? b64tab[cccc.charAt(2)] << 6 : 0) |
          (len > 3 ? b64tab[cccc.charAt(3)] : 0),
        chars = [fromCharCode(n >>> 16), fromCharCode((n >>> 8) & 0xff), fromCharCode(n & 0xff)]
      chars.length -= [0, 0, 2, 1][padlen]
      return chars.join('')
    }
    var _atob = global.atob
      ? function (a) {
          return global.atob(a)
        }
      : function (a) {
          return a.replace(/\S{1,4}/g, cb_decode)
        }
    var atob = function (a) {
      return _atob(String(a).replace(/[^A-Za-z0-9\+\/]/g, ''))
    }
    var _decode = buffer
      ? buffer.from && Uint8Array && buffer.from !== Uint8Array.from
        ? function (a) {
            return (a.constructor === buffer.constructor ? a : buffer.from(a, 'base64')).toString()
          }
        : function (a) {
            return (a.constructor === buffer.constructor ? a : new buffer(a, 'base64')).toString()
          }
      : function (a) {
          return btou(_atob(a))
        }
    var decode = function (a) {
      return _decode(
        String(a)
          .replace(/[-_]/g, function (m0) {
            return m0 == '-' ? '+' : '/'
          })
          .replace(/[^A-Za-z0-9\+\/]/g, '')
      )
    }
    var noConflict = function () {
      var Base64 = global.Base64
      global.Base64 = _Base64
      return Base64
    }
    // export Base64
    global.Base64 = {
      VERSION: version,
      atob: atob,
      btoa: btoa,
      fromBase64: decode,
      toBase64: encode,
      utob: utob,
      encode: encode,
      encodeURI: encodeURI,
      btou: btou,
      decode: decode,
      noConflict: noConflict,
      __buffer__: buffer,
    }
    // if ES5 is available, make Base64.extendString() available
    if (typeof Object.defineProperty === 'function') {
      var noEnum = function (v) {
        return { value: v, enumerable: false, writable: true, configurable: true }
      }
      global.Base64.extendString = function () {
        Object.defineProperty(
          String.prototype,
          'fromBase64',
          noEnum(function () {
            return decode(this)
          })
        )
        Object.defineProperty(
          String.prototype,
          'toBase64',
          noEnum(function (urisafe) {
            return encode(this, urisafe)
          })
        )
        Object.defineProperty(
          String.prototype,
          'toBase64URI',
          noEnum(function () {
            return encode(this, true)
          })
        )
      }
    }
    //
    // export Base64 to the namespace
    //
    if (global['Meteor']) {
      // Meteor.js
      Base64 = global.Base64
    }
    // module.exports and AMD are mutually exclusive.
    // module.exports has precedence.
    if (typeof module !== 'undefined' && module.exports) {
      module.exports.Base64 = global.Base64
    } else if (typeof define === 'function' && define.amd) {
      // AMD. Register as an anonymous module.
      define([], function () {
        return global.Base64
      })
    }
    // that's it!
    return { Base64: global.Base64 }
  }
)
